EP1550908A1 - Dispositif d'eclairage et afficheur d'images de projection utilisant ce dispositif - Google Patents

Dispositif d'eclairage et afficheur d'images de projection utilisant ce dispositif Download PDF

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Publication number
EP1550908A1
EP1550908A1 EP03754017A EP03754017A EP1550908A1 EP 1550908 A1 EP1550908 A1 EP 1550908A1 EP 03754017 A EP03754017 A EP 03754017A EP 03754017 A EP03754017 A EP 03754017A EP 1550908 A1 EP1550908 A1 EP 1550908A1
Authority
EP
European Patent Office
Prior art keywords
face
light source
light
angle
rod integrator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03754017A
Other languages
German (de)
English (en)
Other versions
EP1550908B1 (fr
EP1550908A4 (fr
Inventor
Atsushi Hatakeyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of EP1550908A1 publication Critical patent/EP1550908A1/fr
Publication of EP1550908A4 publication Critical patent/EP1550908A4/fr
Application granted granted Critical
Publication of EP1550908B1 publication Critical patent/EP1550908B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/18—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for optical projection, e.g. combination of mirror and condenser and objective
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0938—Using specific optical elements
    • G02B27/0994—Fibers, light pipes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/0095—Relay lenses or rod lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/09—Beam shaping, e.g. changing the cross-sectional area, not otherwise provided for
    • G02B27/0905—Dividing and/or superposing multiple light beams
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/2006—Lamp housings characterised by the light source
    • G03B21/2013—Plural light sources
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/20—Lamp housings
    • G03B21/208—Homogenising, shaping of the illumination light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
    • H04N5/7416—Projection arrangements for image reproduction, e.g. using eidophor involving the use of a spatial light modulator, e.g. a light valve, controlled by a video signal

Definitions

  • the illuminator further comprises a first reflector for guiding light from the first light source portion to the incident end face of the rod integrator and a second reflector for guiding light from the second light source portion to the incident end face of the rod integrator.
  • first light source portion and the second light source portion are arranged such that the second light source portion is in an emission direction of the first light source portion.
  • the projection image display device is provided with a means for turning light that turns a light flux emitted from the rod integrator around a center line of the rod integrator and guides the light flux to the light valve in accordance with an arrangement of the light valve.
  • a means for turning light that turns a light flux emitted from the rod integrator around a center line of the rod integrator and guides the light flux to the light valve in accordance with an arrangement of the light valve.
  • FIG. 1 is a top view of a conceptual diagram of an optical system according to Embodiment 1.
  • the incident end face 130F of the rod integrator 1 is arranged in the vicinity of the second focal point of the concave mirror 3.
  • the incident light fluxes are totally reflected as appropriate by side surfaces of the rod integrator 1 in the vertical and horizontal directions and emitted from the exit end face 130B of the rod integrator 1.
  • FIG. 4 is a top view of the rod integrator 1 showing the behavior of the incident light ray.
  • FIG. 5 is a lateral view of the rod integrator 1 showing the behavior of the incident light ray.
  • FIG. 4 shows how the incident light ray enters the incident end face 130F at a maximum angle (2 ⁇ ), and is then reflected inside the rod integrator 1 and emitted from the exit end face 130B.
  • maximum angle refers to the maximum angle corresponding to one of the light sources of the light entering the incident end face 130F of the rod integrator 1.
  • values for a horizontal length L of the exit end face 130B, the maximum angle of the light source ⁇ MAX, and a refractive index nd of the rod integrator 1 are required, but these are constants. This is because the length L is determined according to such factors as the form of the light valve, the maximum angle ⁇ MAX is determined by the incident angle of each light source portion, and the refractive index nd is determined by the material that constitutes the rod integrator. Furthermore, the value for the emission angle ⁇ E is also required, but this value is a requirement determined according to the maximum angle ⁇ MAX, so this too is a constant.
  • V (mm) is the length in the vertical direction of the rod integrator
  • ⁇ V (degrees) is the maximum incident angle in the vertical direction
  • L (mm) is the length in the horizontal direction of the exit end face 130B.
  • the length L, the number of reflections n, the maximum angle ⁇ MAX, and the emission angle ⁇ E are determined, it is possible to derive the length L', the tapering angle ⁇ T, and the length H in the longitudinal direction, and thus it is possible to determine the form of the rod integrator 1.
  • the present embodiment was described using an example of a projection image display device, but if using a device provided with at least, in the direction in which light proceeds, the structure from the light source 2 to the relay lens system 4 as an illuminator, it is possible to achieve an illuminator that can emit a light having high brightness and uniformity.
  • synthesizing prisms 48 and 49 are used as the first and second reflector.
  • the synthesizing prisms 48 and 49 are formed from a glass material with excellent heat resistance and their reflective surfaces are coated with a multi-layer dielectric film with an excellent reflectance ratio.
  • the reflected light is converged and irradiated at angles 0, which are equivalent with respect to the center line 103 of the rod integrator, in the vicinity of the incident end face 130F, that is, in the vicinity of the second focal point of the concave mirrors 3.
  • FIG. 11 is a conceptual diagram showing an optical system of a projection image display device according to Embodiment 4.
  • the same reference numerals are used for items with the same structure as in the projection image display device according to Embodiment 1 shown in FIG. 1, and detailed description of such items is omitted here.
  • FIG. 12 shows the device shown in FIG. 11 as viewed from the side of the exit end face 130B of the rod integrator 1. As shown in FIGS. 11 and 12, the structure from the light sources 2 to the rod integrator 1 in the order of progression of the light fluxes is the same as in Embodiment 4.
  • the reflective light valve 14 is constituted by a digital mirror device, which is an aggregation of micro-mirrors, and displays an image based on an electric signal that output from a drive circuit (not shown).
  • the image displayed by the reflective light valve 14 is magnified and projected via the total reflection prism 13 and the projection lens 7 and projected onto a screen (not shown).
  • FIG. 17 is a top view of the rod integrator 20 showing the behavior of an incident light ray.
  • FIG. 18 is a lateral view of the rod integrator 20 showing the behavior of an incident light ray.
  • the divergence angle of light at the exit end face can be made smaller than the divergence angle of light at the incident end face in the horizontal direction and the vertical direction as described above, which is advantageous when a light of a very high brightness is desired.
  • FIG. 19 is a top view of a conceptual diagram of an optical system according to Embodiment 6. Except for the relationship between the incident angle and the converging angle, the configuration shown in this diagram is the same configuration as shown in FIG. 1 of Embodiment 1, and therefore the same reference numerals as FIG. 1 are used and a further description of each part is omitted.
  • ⁇ E is the incident angle and ⁇ c is the converging angle.
  • the incident angle ⁇ E is smaller than the converging angle ⁇ c.
  • Table 4 shows calculated values of the tapering angle ⁇ T, the incident face length L', the rod integrator length M, and the convergence efficiency normalized to a maximum value of 1, for various incident angles.
  • the effective lengths of the exit face of the rod integrator are an effective horizontal length of 7.5 mm and an effective vertical length of 5.8 mm, and a substantially ideal relay lens system is used for the calculated values of the convergence efficiency.
  • the number of reflections is set to 3, 4, and 5.
  • the exit end face 130B of the rod integrator has to be polished during production.
  • the end portions of the rod integrator 1 that is, the four edges and four corners of the exit end face 130B, are sometimes chipped during the polishing process.
  • the size of the chipped of portions may be 0.1 mm or more.
  • the rod integrator in the above-described embodiments was described with examples using a glass material, but it also may be a columnar optical element that is hollow with the four inner wall surfaces formed with mirrors. The incident light flux in this configuration is also totally reflected as appropriate by the mirrors of the inner wall surfaces.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Projection Apparatus (AREA)
EP03754017.6A 2002-10-09 2003-10-08 Dispositif d'eclairage et afficheur d'images de projection utilisant ce dispositif Expired - Lifetime EP1550908B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2002295547 2002-10-09
JP2002295547 2002-10-09
JP2003142489 2003-05-20
JP2003142489 2003-05-20
JP2003325810 2003-09-18
JP2003325810 2003-09-18
PCT/JP2003/012865 WO2004034143A1 (fr) 2002-10-09 2003-10-08 Dispositif d'eclairage et afficheur d'images de projection utilisant ce dispositif

Publications (3)

Publication Number Publication Date
EP1550908A1 true EP1550908A1 (fr) 2005-07-06
EP1550908A4 EP1550908A4 (fr) 2009-05-20
EP1550908B1 EP1550908B1 (fr) 2014-07-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03754017.6A Expired - Lifetime EP1550908B1 (fr) 2002-10-09 2003-10-08 Dispositif d'eclairage et afficheur d'images de projection utilisant ce dispositif

Country Status (6)

Country Link
US (1) US7316484B2 (fr)
EP (1) EP1550908B1 (fr)
KR (1) KR100704203B1 (fr)
CA (1) CA2487853A1 (fr)
TW (1) TW200420139A (fr)
WO (1) WO2004034143A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1874063A2 (fr) * 2006-06-20 2008-01-02 LG Electronics Inc. Dispositif de projection
CN101726972B (zh) * 2008-10-16 2011-09-21 台达电子工业股份有限公司 均光装置及包含该均光装置的数字光学处理投影系统
EP2442015A1 (fr) * 2009-06-12 2012-04-18 Sharp Kabushiki Kaisha Dispositif d'irradiation de lumière et dispositif d'inspection
EP2589857A1 (fr) * 2010-06-29 2013-05-08 Sharp Kabushiki Kaisha Appareil de source lumineuse et appareil d'émission de pseudo lumière du soleil doté de celui-ci

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US6956701B1 (en) * 2004-04-26 2005-10-18 Infocus Corporation Method and apparatus for combining light paths of multiple colored light sources through a common integration tunnel
JP4965437B2 (ja) * 2004-05-26 2012-07-04 トムソン ライセンシング ２つのランプの照明系
JP2006091257A (ja) * 2004-09-22 2006-04-06 Olympus Corp 導光装置，照明装置及び画像投影装置
JP4696666B2 (ja) * 2005-04-27 2011-06-08 コニカミノルタオプト株式会社 照明光学系およびそれを備えた画像投影装置
US20060268417A1 (en) * 2005-05-27 2006-11-30 Texas Instruments Incorporated A Refractive Scheme for Dual Lamp High Brightness Projection System
TW200700883A (en) * 2005-06-20 2007-01-01 Benq Corp Light source module of a projector and color wheel thereof
TW200823497A (en) * 2006-11-17 2008-06-01 Benq Corp Light integrating system
JP2008216840A (ja) * 2007-03-07 2008-09-18 Mitsubishi Electric Corp 投写型表示装置
US8408721B2 (en) * 2008-08-14 2013-04-02 3M Innovative Properties Company Projection system with imaging light source module
US20100061118A1 (en) * 2008-09-09 2010-03-11 Keh-Shium Liu Lens Beam-Concentrating Device
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JP4516622B2 (ja) * 2008-12-08 2010-08-04 三菱電機株式会社 投写型表示装置
JP5428346B2 (ja) * 2009-01-15 2014-02-26 セイコーエプソン株式会社 照明装置及びこれを備えるプロジェクター
US8851684B2 (en) * 2009-06-18 2014-10-07 Nec Display Solutions, Ltd. Optical unit including an integrator optical system, and projection display device including the optical unit
JP2011048226A (ja) * 2009-08-28 2011-03-10 Seiko Epson Corp プロジェクター
JP5274528B2 (ja) * 2010-10-08 2013-08-28 シャープ株式会社 擬似太陽光照射装置および太陽電池パネル用検査装置
US8517586B2 (en) 2011-01-30 2013-08-27 Chi Lin Technology Co., Ltd. Illumination device having light-aggregation, light-mix and light-absorbing components
CN102231010A (zh) * 2011-06-15 2011-11-02 杭州晶景光电有限公司 用于微型投影光引擎的宽尺寸面光源整形系统
CN103365046B (zh) * 2012-03-26 2015-09-09 中强光电股份有限公司 投影装置及其集光柱
CN102768458A (zh) * 2012-07-12 2012-11-07 芜湖雅图数字视频技术有限公司 一种双灯照明系统及投影仪
JP6421930B2 (ja) * 2014-01-09 2018-11-14 パナソニックＩｐマネジメント株式会社 照明装置及び投写型映像表示装置
EP3165952A4 (fr) * 2014-07-02 2018-03-07 Mitsubishi Electric Corporation Dispositif d'homogénéisation de la lumière
CN104407495A (zh) * 2014-12-04 2015-03-11 成都思邦力克科技有限公司 投影仪
KR101658854B1 (ko) * 2015-09-15 2016-09-22 김우중 무대용 조명장치의 광원 발생장치
CN109581641A (zh) * 2018-12-27 2019-04-05 武汉沃亿生物有限公司 结构光显微成像的照明系统
CN111830719A (zh) * 2020-08-07 2020-10-27 谷东科技有限公司 照明装置和增强现实显示设备

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1874063A2 (fr) * 2006-06-20 2008-01-02 LG Electronics Inc. Dispositif de projection
EP1874063A3 (fr) * 2006-06-20 2010-01-13 LG Electronics Inc. Dispositif de projection
CN101726972B (zh) * 2008-10-16 2011-09-21 台达电子工业股份有限公司 均光装置及包含该均光装置的数字光学处理投影系统
EP2442015A1 (fr) * 2009-06-12 2012-04-18 Sharp Kabushiki Kaisha Dispositif d'irradiation de lumière et dispositif d'inspection
EP2442015A4 (fr) * 2009-06-12 2013-01-02 Sharp Kk Dispositif d'irradiation de lumière et dispositif d'inspection
CN102341645B (zh) * 2009-06-12 2014-02-19 夏普株式会社 光照射装置及检查装置
EP2589857A1 (fr) * 2010-06-29 2013-05-08 Sharp Kabushiki Kaisha Appareil de source lumineuse et appareil d'émission de pseudo lumière du soleil doté de celui-ci
EP2589857A4 (fr) * 2010-06-29 2014-11-19 Sharp Kk Appareil de source lumineuse et appareil d'émission de pseudo lumière du soleil doté de celui-ci

Also Published As

Publication number Publication date
KR20050014870A (ko) 2005-02-07
TWI325278B (fr) 2010-05-21
US20050146891A1 (en) 2005-07-07
EP1550908B1 (fr) 2014-07-23
US7316484B2 (en) 2008-01-08
EP1550908A4 (fr) 2009-05-20
TW200420139A (en) 2004-10-01
WO2004034143A1 (fr) 2004-04-22
KR100704203B1 (ko) 2007-04-05
CA2487853A1 (fr) 2004-04-22

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